Bug - Calendar icon is kept active in disabled DateTime control

[BuilderNSV]

Environment

• Server OS: Linux
• Browser: Firefox
• Znuny version: 7.1.1

Expected behavior

All controls are disabled if BuildDateSelection() with argument "Disabled => 1" is called.

Actual behavior

Calendar icon is kept active if BuildDateSelection() function with argument "Disabled => 1" is called and can visually change values of day/month/year. May be it changes nothing but it is certainly confusing.

How to reproduce

Steps to reproduce the behavior:

1. Make a form with DateTime control or use some existent, for example Kernel\Modules\AgentTicketActionCommon.pm, line 2384
2. Make or change BuildDateSelection() function to be called with argument "Disabled => 1".
3. Go to the page with prepared DateTime control and see that all controls are inactive but click on icon shows calendar and new date is visually applied to day/month/year controls

Screenshots